Hair dye

ABSTRACT

The subject matter of the present disclosure relates to agents for oxidative hair dyeing, containing from about 70-about 95 wt. % water, oxidation dye precursor(s), alkalizing agents, from about 0.1-about 2 wt. % anionic, zwitterionic or amphoteric tenside, from about 0.1-about 1.5 wt. % sodium polyacrylate, wherein only small quantities, if any, of linear, saturated alkanols with two or three hydroxy groups and from 2 to 8 carbon atoms are contained in the alkyl group, also no saturated or unsaturated non-alkoxylated alkanols with a hydroxy group and from 1 to about 50 carbon atoms in the alk(en)yl group, no saturated or unsaturated alkanecarboxylic acids with from 1 to about 50 carbon atoms and no oxidants are contained in the agent.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims priority to German Patent Application No. 102016 225 382.4, filed Dec. 19, 2016, which is incorporated herein byreference in its entirety.

TECHNICAL FIELD

The present application relates to an oxidative hair dye, a kit,comprising said dye and a hair dyeing method employing said hair dye.

BACKGROUND

To achieve permanent, intense colors with corresponding fastnessproperties, so-called oxidative dyes are used. Said dyes usually containoxidative dye precursors, so-called developer components and couplercomponents. The developer components join together or couple with one ormore coupler components to form, under the influence of oxidants oratmospheric oxygen, the actual dyes per se. Indeed, the oxidative dyesare exemplified by outstanding, long-lasting color results. To achievenatural-looking colors, however, a mixture from a larger number ofoxidative dye precursors (ODP) must normally be used; in many cases,partially-oxidizing dyes are still used to create the tinting effect.

Most of the oxidative dyes used for stabilizing the dye precursorsduring storage and to accelerate the reaction during oxidativeapplication have an alkali pH value, which is set with alkalizing agentssuch as alkanolamines, ammonia or inorganic bases.

To produce the dye, the alkali coloring component is usually mixed witha hydrous hydrogen peroxide solution to form a homogeneous creme or ahomogeneous gel, and then applied immediately to the hair to be dyed.This dye mixture remains on the hair for a period of from about 5 toabout 60 minutes, until the oxidative formation of the dye on the hairis complete. The dye mixture is then washed out.

The aforementioned oxidative precursors (OPC) and alkalizing agents areusually worked into the hair in a cosmetically suitable carrier, such asa creme, for example. The carrier guarantees a homogeneous distributionand an adequate dwell time of the hair dye on the hair.

The disadvantage is the complex manufacture of such a creme. The fusingof the fat components and the emulsification process requires a highamount of energy. The subsequent cooling process consumes largequantities of cooling water.

A further disadvantage is that a creme has to be packaged in arelatively complex manner. Due to their higher viscosity, cremes areincapable of flowing and cannot be transferred from a storage bottleinto the application bottle, in which the hydrogen peroxide solution hasalready been placed, simply by tipping. Instead, the alkali dye cremesare packed primarily in flexible aluminum tubes, packaging material withhigh energy and raw material consumption.

A higher viscosity of the dye creme is a further disadvantage in termsof producing the application mixture. The alkali dye creme is mixed withthe developer preparation by hand. The most homogeneous applicationmixture possible is required to achieve an effective color result. Itmust be possible to produce said mixture within the shortest possibletime. This is because the oxidation dye precursors start to react assoon as they come into contact with the hydrogen peroxide and theatmospheric oxygen. The fastest possible mixture is achieved mostreadily if dye creme and developer preparation are as fluid as possible.Conversely, the application mixture itself should be more viscose sothat it remains on the hair without dripping.

BRIEF SUMMARY

Agents for oxidative hair dyeing, kits-of-parts including the agents,and methods for oxidative hair dyeing using the agent are providedherein. In an embodiment, an agent for oxidative hair dyeing includeswater, at least one oxidation dye precursor, at least one alkalizingagent, at least one tenside, sodium polyacrylate, and optionally atleast one linear, saturated alkanol with two or three hydroxy groups andfrom about 2 to about 8 carbon atoms in the alkyl group. The at leastone tenside is selected from anionic, zwitterionic and amphoterictensides, as well as mixtures thereof. Relative to the weight of theagent in each case, the agent includes the water in an amount of fromabout 70 to about 95 wt. %, the at least one tenside in a total quantityof from about 0.1-about 2 wt. %, the sodium polyacrylate in a totalquantity of from about 0.1-about 1.5 wt. %, and at least one linear,saturated alkanol with two or three hydroxy groups and from about 2 toabout 8 carbon atoms in the alkyl group in a total quantity of from0-about 3 wt. %. No saturated or unsaturated non-alkoxylated alkanolswith a hydroxy group and from about 1 to about 50 carbon atoms in thealk(en)yl group are included in the agent. No saturated or unsaturatedalkanecarboxylic acids with from about 1 to about 50 carbon atoms areincluded in the agent. No oxidants are included in the agent.

DETAILED DESCRIPTION

The following detailed description is merely exemplary in nature and isnot intended to limit the disclosure or the application and uses of thesubject matter as described herein. Furthermore, there is no intentionto be bound by any theory presented in the preceding background or thefollowing detailed description.

The present disclosure addressed the problem of providing an oxidativehair dye, which can be produced under the most cost-effective andsustainable conditions possible. The present disclosure also addressedthe problem of providing an oxidative hair dye, which can be packagedunder the most cost-effective and sustainable conditions possible. Thepresent disclosure also addressed the problem of providing an oxidativehair dye, which is simple to blend and apply.

Said problems are solved by an agent for oxidative hair dye containingthe following, in each case relative to its weight:

-   -   from about 70 to about 95 wt. % water,    -   at least one oxidation dye precursor,    -   at least one alkalizing agent,    -   at least one tenside, selected from anionic, zwitterionic and        amphoteric tensides, as well as mixtures thereof, in a total        quantity of from about 0.1-about 2 wt. %,    -   Sodium polyacrylate in a total quantity of from about 0.1-about        1.5 wt. %, preferably from about 0.5-about 1.3 wt. %, more        preferably from about 0.8-about 11 wt. %, preferably with an        average molecular weight Mw in the range from about 1,000,000 to        about 20,000,000 Dalton, preferably from about 6,000,000 to        about 15,000,000 Dalton,    -   at least one linear, saturated alkanol with two or three hydroxy        groups and from 2 to 8 carbon atoms in the alkyl group in a        total quantity of from about 0-about 3 wt. %, wherein    -   no saturated or unsaturated non-alkoxylated alkanols with a        hydroxy group and from 1 to 50 carbon atoms in the alk(en)yl        group and    -   no saturated or unsaturated alkanecarboxylic acids with from 1        to 50 carbon atoms, and    -   no oxidants are included in the agent.

The agent as contemplated herein constitutes the alkali dye component ofan oxidative hair dye. This is usually mixed immediately beforeapplication with a hydrous hydrogen peroxide preparation and thenapplied to the hair to be dyed. Until mixed with the hydrous hydrogenperoxide preparation, the agent as contemplated herein contains nooxidants.

Water Content

The agent as contemplated herein contains, in each case relative to itsweight, from about 70-about 95 wt. % water, preferably from about78-about 91 wt. % water.

Alkalizing Agent

The agent as contemplated herein contains at least one alkalizing agent.The alkalizing agent preferred as contemplated herein for setting thepreferred pH value is selected from the group comprising ammoniumhydroxide, basic amino acids, alkali hydroxides, alkanolamines, alkalimetal meta silicates, alkali phosphates and alkali hydrogen phosphates,as well as the mixtures thereof. Lithium, sodium and potassium, moreparticularly sodium or potassium are preferably used as alkali metalions.

The basic amino acids that can be used as alkalizing agents arepreferably selected from the group of L-arginine, D-arginine,D,L-arginine, L-lysine, D-lysine, D,L-lysine, L-arginine, D-arginine,D,L-arginine, are more preferably used as alkalizing agents ascontemplated herein.

The alkali hydroxides that can be used as alkalizing agents arepreferably selected from sodium hydroxide and potassium hydroxide.

The alkanolamines usable as alkalization agents are preferably selectedfrom primary amines with a C₂-C₆-alkyl base body having at least onehydroxyl group. More preferred alkanolamines are selected from the groupcomprising 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol,4-amino-butan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol,1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol,1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol,1-amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol,2-amino-2-methylpropan-1,3-diol. Most preferred alkanolamines ascontemplated herein are selected from the group of 2-aminoethan-1-ol,2-amino-2-methylpropan-1-ol and 2-amino-2-methyl-propan-1,3-diol.

A most preferred alkalizing agent as contemplated herein ismonoethanolamine (2-aminoethan-1-ol). To achieve the most odorless dyemethod possible and to optimize the color fastness properties of thedye, monoethanolamine is contained in a total quantity of from about0.2-about 10 wt. %, preferably from about 0.5-about 8 wt. %, morepreferably from about 1 to about 6 wt. % and most preferably from about2 to about 4 wt. %—relative to the weight of the dye as contemplatedherein.

In addition to and/or instead of monoethanolamine, other preferred dyesas contemplated herein are ammonium hydroxide, i.e. ammonia in the formof its hydrous solution. Suitable hydrous ammonia solutions are fromabout 10 to about 35 percentage solutions (calculated in vol. %.) 100 gof hydrous ammonia solution with 25 vol. % NH₃ contain approx. 50 g ofammonia. Ammonia is preferably used in the form of a from about 20 toabout 30 vol. % solution, most preferably in the form of a 25 vol. %solution.

In a most preferred embodiment, the dye as contemplated herein containsammonium hydroxide in a quantity of from about 0.2 to about 6 wt. %,preferably from about 0.4 to about 5 wt. %, more preferably from about1.0 to about 3 wt. % and most preferably from about 0.3 to about 1.5 wt.%, relative to the weight of the dye as contemplated herein.

Other alkalizing agents such as potassium hydroxide and sodium hydroxidecan also be contained, preferably in a total quantity of from about 0.05to about 1.5 wt. %, most preferably from about 0.1 to about 0.6 wt. %,in each case relative to the weight of the dye as contemplated herein.

In another most preferred embodiment, the dye as contemplated hereincontains at least one alkalizing agent in a total quantity of from about0.02-about 0.4 mol/100 g, preferably from about 0.05-about 0.3 mol/100g, in each case in mol of alkalizing agents per 100 grams of agent ascontemplated herein.

Preferred agents as contemplated herein are exemplified by a pH value inthe range of from about 8-about 12, preferably from about 9-about 11.5,more preferably from about 9.5-about 10.5, in each case measured at 20°C.

Anionic Tenside, Zwitterionic Tenside or Amphoteric Tenside

The agent as contemplated herein contains, relative to its weight, atleast one tenside, selected from anionic, zwitterionic r amphoterictensides, as well as mixtures thereof, in a total quantity of from about0.1-about 2 wt. %, preferably from about 0.3-about 1.5 wt. %, and mostpreferably from about 0.5-about 1.2 wt. %, in each case relative to theweight of said agent.

Tensides and emulsifiers according to the present disclosure areamphiphilic (bi-functional) compounds, which includes at least onehydrophobic and at least one hydrophilic molecular part.

According to the present disclosure, saturated and unsaturatedalkan-1-oles having at least 4 carbon atoms in the alk(en)yl radical,alkanecarboxylic acids having at least 4 carbon atoms in the alk(en)ylradical and glyceryl fatty acid mono and diesters having at least 4carbon atoms in the fatty acid radical are not considered tensides.

The hydrophobic radical is preferably a hydrocarbon chain with from 8-30carbon atoms, which can be saturated or unsaturated, linear or branched.This C₈-C₃₀ alkyl chain is most preferably linear. Basic properties ofthe tensides and emulsifiers are the oriented adsorption at boundarysurfaces, as well as the aggregation to micelles and the formation oflyotrophic phases.

When selecting suitable tensides as contemplated herein, it may bepreferable to use a mixture of tensides in order to set the propertiesof the oxidant dye as contemplated herein in an optimal manner.

Anionic tensides suitable for the agents as contemplated herein are allanionic surfactants, suitable for use on the human body, which have anionic group that renders them water-soluble, for example a sulphate,sulphonate or phosphate group, and a lipophilic alkyl group with approx.8 to 30 C-atoms, preferably from 8 to 24 C-atoms in the molecule, theexception being linear and branched fatty acids with from 8 to 30C-atoms and the salts thereof (soaps). Furthermore, the molecule cancontain glycol or polyglycol ether groups, ester, ether and amidegroups, as well as hydroxyl groups. Examples of suitable anionictensides, each in the form of the sodium, potassium and ammonium, aswell as the mono-, di- and trialkanolammonium salts having from 2 to 4C-atoms in the alkanol group, polyethoxylated ether carboxylic acids,acylsarcosides, acyltaurides, acylisethionates, sulfosuccinic acid mono-and dialkyl esters and sulfosuccinic acid mono-alkylpolyoxyethylesterhaving from 1 to 6 ethylene oxide groups, linear alkansulfonates, linearalpha-olefinsulfonates, sulfonates of unsaturated fatty acids having upto 6 double bonds, alpha-sulfo fatty acid methylesters of fatty acids,C₈-C₂₀ alkylsulfates and C₈-C₂₀ alkylether sulfates having from 1 to 15oxyethyl groups, mixed surfactant hydroxysulfonates, sulfatedhydroxyalkylpolyethylene and/or hydroxyalkylenpropylene glycol ethers,esters of tartaric acid or citric with ethoxylated or propoxylated fatalcohols, where necessary polyethoxylated alkyl- and/oralkenyletherphosphates, sulfated fatty acid alkylenglycol esters, aswell as monoglyceridsulfates and monoglyceridethersulfates. Preferredanionic tensides are selected from C₈-C₂₀ alkylsulfates,C₈-C₂₀alkylethersulfates and C₈-C₂₀ ether carboxylic acids, each havingfrom 8 to 20 C-atoms in the alkyl group and from 0 to 12 ethylenoxidegroups in the molecule. Sodium laureth(2)sulfate is most preferred.

Zwitterionic tensides are surfactant compounds, which carry a lipophilicalkyl group having approximately from 8 to 30 C-atoms, preferably from 8to 24 C-atoms and at least one quaternary ammonium group and at leastone carboxylate, sulfonate or sulfate group. Particularly suitablezwitterionic tensides are the so-called betaines, such as the n-alkyl-n,n-dimethylammonium glycinates, for example coco-alkyldimethyl ammoniumglycinate, n-acylaminopropyl-n, n-dimethyl ammonium glycinates, forexample coco-acylaminopropyldimethyl ammonium glycinate (having the INCItrade name of Cocamidopropyl Betaine), and2-alkyl-3-carboxymethyl-3-hydroxyethyl imidazolines, each having from 8to 18 carbon atoms in the alkyl or acyl group, as well ascoco-acylaminoethylhydroxyethyl carboxymethyl glycinate. A preferredzwitterionic tenside is the coco-acylaminopropyl-dimethylammoniumglycinate known under the INCI trade name of CocamidopropylBetaine.

Amphoteric tensides are those surfactant compounds containing a C₈-C₃₀alkyl or acyl group and at least one free amino group and at least oneCOOH or —SO₃H group in the molecule and are capable of forming internalsalts. Examples of suitable amphoteric surfactants are N-alkylglycines,N-alkylpropionic acids, N-alkylaminobutyric acids,N-alkyliminodipropionic acids,N-hydroxyethyl-N-alkylamidopropylglycines, N-alkyltaurines,N-alkylsarcosines, 2-alkylaminopropionic acids and alkylaminoaceticacids having in each case from 8 to 30 carbon atoms in the alkyl group.Particularly preferred amphoteric tensides areN-cocosalkylaminopropionate, cocosacylaminoethylaminopropionate andC₁₂-C₁₈ acylsarcosin.

Preferred anionic or zwitterionic tensides as contemplated herein areselected from C₈-C₂₀ alkyl sulfates, C₈-C₂₀ alkylether sulfates andC₈-C₂₀ether carboxylic acids, each having from 8 to 20 C-atoms in thealkyl group and from 0 to 12 ethylenoxide groups in the molecule, sodiumlaureth(2)sulfate being more preferred, also fromcoco-acylaminopropyl-dimethylammoniumglycinate and from mixtures of saidtensides.

Most preferred agents as contemplated herein contain at least oneanionic or zwitterionic tenside, selected from C₈-C₂₀ alkyl sulfates,C₈-C₂₀-alkyl ether sulfates and C₈-C₂₀ ether carboxylic acids, each withfrom 8 to 20 C-atoms in the alkyl group and from 0 to 12 ethylene oxidegroups in the molecule, wherein sodium laureth(2)sulphate isparticularly preferred, moreover from coco-acylaminopropyl-dimethylammonium glycinate, as well as from mixtures of said tensides, in atotal quantity of from about 0.1-about 2 wt. %, preferably from about0.3-about 1.5 wt. %, and most preferably from about 0.5-about 1.2 wt. %relative to the weight of the agent in each case.

A further essential feature of the agent as contemplated herein is asodium polyacrylate content in a total quantity of from about 0.1-about1.5 wt. %, preferably from about 0.5-about 1.3 wt. %, most preferablyfrom about 0.8-about 1.1 wt. %, relative to the weight of the agent ineach case.

As contemplated herein, sodium polyacrylate preferably comprisespolymers with the CAS number 9003-04-7. Sodium polyacrylates preferredas contemplated herein have an average molecular weight Mw in the rangefrom about 1,000,000 to about 20,000,000 Dalton, preferably from about6,000,000 to about 15,000,000 Dalton. The average molecular weight Mwcan, for example, be determined by employing gel permeationchromatography (GPC) with polystyrene as an internal standard accordingto DIN 55672-3, Version 8/200.

The sodium polyacrylate leads to a further thickening of the agent, theagent taking on the consistency of a creamy gel at the same time.

Agents preferred as contemplated herein contain sodium polyacrylate in atotal quantity of from about 0.5-about 1.3 wt. %, preferably from about0.8-about 1.1 wt. %, relative to the weight of the agent in each case.

In a preferred embodiment, the sodium polyacrylate is contained as asodium polyacrylate pregelled in a water-oil emulsion. The sodiumpolyacrylate-containing water-in-oil emulsion preferably contains, ineach case relative to its weight, from about 40-about 60 wt. % of sodiumpolyacrylate, from about 25-about 45 wt. % oil(s) in total, from about0.5-about 4.9 wt. % tenside(s) in total and from about 0.5-about 4.9 wt.% water.

The oil contained in the sodium polyacrylate-containing water-in-oilemulsion is most preferably selected from natural and synthetichydrocarbons, most preferably from mineral oil, paraffin oils, C₁₈-C₃₀isoparaffins, particularly isoeicosane, polyisobutenes and polydecenes,C₈-C₁₆ isoparaffins, as well as 1,3-di-(2-ethylhexyl)-cyclohexane; thebenzoic acid esters of linear or branched C₈₋₂₂ alkanols; triglyceridesof linear or branched, saturated or unsaturated, where necessaryhydroxylated C₈₋₃₀ fatty acids, particularly natural oils; thedicarboxylic acid esters of linear or branched C₂-C₁₀ alkanols; theesters of linear or branched saturated or unsaturated fat alcoholshaving from 2-30 carbon atoms with linear or branched saturated orunsaturated fatty acids having from 2-30 carbon atoms, which can behydroxylated; the adducts of from 1 to 5 propylenoxide units ofmonovalent or multivalent C₈₋₂₂alkanols; the C₈-C₂₂ fatty alcohol estersof monovalent or multivalent C₂-C₇hydroxycarboxylic acids; thesymmetrical, asymmetrical or cyclical esters of carbonic acids havingC₃₋₂₂ alkanols, C₃₋₂₂ alkandiols or C₃₋₂₂ alkantriols; the esters ofdimers of unsaturated C₁₂-C₂₂ fat alcohols (dimer fatty acids) havingmonovalent linear, branched or cyclical C₂-C₁₈ alkanols or havingmonovalent linear or branched C₂-C₆ alkanols; silicone oils, as well asmixtures of the aforementioned substances. The oil most preferred ascontemplated herein is mineral oil.

The tenside contained in the sodium polyacrylate-containing water-in-oilemulsion is most preferably from non-ionic tensides. The non-ionictensides most preferably used are selected from, having from 7-about 80mol of ethylene oxide per mol, ethoxylated castor oil, ethoxylatedC₈-C₂₄ alkanols having 5-about 30 mol ethylene oxide per mol,ethoxylated C₈-C₂₄carbonic acid having from 5-about 30 mol of ethyleneoxide per mol, having from 4-about 50 mol of ethylene oxide per mol ofsorbitan monoesters of linear saturated and unsaturated C₁₂-C₃₀ carbonicacids, which can be hydroxylated, more particularly those frommyristiric acid, palmitic acid, stearic acid of mixtures of said fattyacids, alkylmono and oligoglycosides having from 8 to 22 carbon atoms inthe alkyl radical and the ethoxylated analogs thereof, as well asmixtures of the aforementioned substances.

The ethoxylated C₈-C₂₄ alkanols have the formula R¹O(CH₂CH₂O)_(n)H,wherein R¹ denotes a linear or branched alkyl and/or alkenyl radicalhaving 8-24 carbon atoms and n, the average number of ethylene oxideunits per molecule, for integers from 5-about 30, preferably 6-about 20,more preferably from 6 to 12 mol ethylene oxide to 1 mol alkanol, whichis preferably selected from capryl alcohol, 2-ethylhexyl alcohol, caprinalcohol, lauryl alcohol, isotridecyl alcohol, tridecyl alcohol, myristylalcohol, cetyl alcohol, palmitoleyl alcohol, stearyl alcohol, isostearylalcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachylalcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brassidylalcohol, as well as the technical mixtures thereof. Adducts from10-about 100 mol ethylene oxide on technical fat alcohols having from12-18 carbon atoms, such as for example coco, palm, palm kernel or sebumfat alcohols are also suitable. Trideceth-6, Isotrideceth-6, Undeceth-6,Myreth-6, Laureth-10, Laureth-12, Laureth-15, Laureth-20, Laureth-30,Myreth-10, Myreth-12, Myreth-15, Myreth-20, Myreth-30, Ceteth-10,Ceteth-12, Ceteth-15, Ceteth-20, Ceteth-30, Steareth-10, Steareth-12,Steareth-15, Steareth-20, Steareth-30, Oleth-10, Oleth-12, Oleth-15,Oleth-20, Oleth-30, Ceteareth-10, Ceteareth-15, Ceteareth-12,Ceteareth-15, Ceteareth-20, Ceteareth-30, as well as Coceth-10,Coceth-12, Coceth-15, Coceth-20 and Coceth-30 are more preferred;Trideceth-6 and Isotrideceth-6, as well as the mixtures thereof, aremost preferred.

The ethoxylated C₈-C₃₀ carbonic acids have the formulaR¹O(CH₂CH₂O)_(n)H, wherein R¹O denotes a linear or branched, saturatedor unsaturated acyl radical having 8-30 carbon atoms and n, the averagenumber of ethylene oxide units per molecule, for integers from 5-about30, preferably from 6-about 20, more preferably from 6 to 12 molethylene oxide to 1 mol C₈-C₃₀ carbonic acid, which is preferablyselected from capryl alcohol, 2-ethylhexyl alcohol, caprin alcohol,lauric acid, isotridecaric acid, myristiric acid, cetyl acid,palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidicacid, petroselic acid, arachine acid, gadoleic acid, behen acid, erucaacid and brassidic acid, as well as the technical mixtures thereof.Adducts from 5-about 30, preferably from 6-about 20, more preferablyfrom 6 to 12 mol of ethylene oxide on technical fatty acids having from12-18 carbon atoms, such as coco, palm, palm kernel or sebum fatalcohols are also suitable.

Agents most preferred as contemplated herein are exemplified in thatthey contain at least one sodium polyacrylate having an averagemolecular weight Mw in the range from about 1,000,000 to about20,000,000 Dalton, preferably from about 6,000,000 to about 15,000,000Dalton, in a total quantity of from about 0.1-about 1.5 wt. %,preferably from about 0.5-about 1.3 wt. %, more preferably from about0.8-about 1.1 wt. %, in each case relative to the total weight of theagent, wherein the sodium polyacrylate is contained pregelled in awater-in-oil emulsion, wherein said water-in-oil emulsion, in each caserelative to its weight, contains from about 40-about 60 wt. % sodiumpolyacrylate, from about 25-about 45 wt. % oil(s) in total, preferablymineral oil, from about 0.5-about 4.9 wt. % tenside(s) in total,preferably from about 0.5-about 4.9 wt. % niotenside(s), and from about0.5-about 4.9 wt. % water.

Agents as contemplated herein, which contain sodium polyacrylate, have aviscosity in the range of from about 10,000-about 75,000 mPas,preferably from about 12,000-about 60,000 mPas, more preferably fromabout 13,000-about 50,000 mPas, most preferably from about 15,000-about25,000 mPas, in each case measured at 20° C. by employing a Brookfieldrotational viscometer at a rotational frequency of 4 rpm with Spindle 5.

Agents preferred as contemplated herein are exemplified by a content ofat least one cross-linked copolymer, constructed from acrylic acid andnon-ethoxylated esters of acrylic acid with linear C10-C30 mono-alcoholsas monomers, wherein the cross-linked copolymer is contained in a totalquantity of from about 0.05-about 2 wt. %, preferably from about0.1-about 1.5 wt. %, more preferably from about 0.3-about 1 wt. %, mostpreferably from about 0.5-about 0.8 wt. %, in each case relative to theweight of the agent. The at least one cross-linked copolymer fromacrylic acid and non-ethoxylated esters of acrylic acid having linearC10-C30 mono-alcohols is preferably selected from copolymers having theINCI trade name of Acrylates/C10-30 Alkyl Acrylate Crosspolymer. Sucroseallyl ether or pentaerythrityl allyl ether is preferably contained asthe cross-linking agent.

Cross-linked copolymers from acrylic acid and non-ethoxylated esters ofacrylic acid having linear C10-C30 mono-alcohols, which are mostpreferred as contemplated herein, can be obtained by polymerizing amonomer mixture which—in each case relative to its weight—contains fromabout 80 to about 99 wt. %, preferably from about 90 to about 98 wt. %,acrylic acid, at least one non-ethoxylated ester of acrylic acid havinglinear C10-C30 mono-alcohols in a total quantity of from about 0.9-about19.9 wt. %, preferably from about 2-about 10 wt. %, as well as across-linking agent in a total quantity of from about 0.1-about 4 wt. %.

Other cross-linked copolymers from acrylic acid and non-ethoxylatedesters having linear C10-C30 mono-alcohols, which are most preferred ascontemplated herein, are exemplified in that their 0.5 wt. % dispersionin water at 25° C. and a pH value in the range of from about 5.8-about6.3 has a viscosity in the range of from about 45,000 to about 65,000mPas, measured by employing a Brookfield RVF or a Brookfield RVTviscometer at a rotational frequency of 20 rpm with Spindle #7.

The content of the at least one cross-linked copolymer, constructed fromacrylic acid and non-ethoxylated esters with acrylic acid having linearC10-C30 mono-alcohols as monomers, is preferably selected such that theviscosity of the agent as contemplated herein is within the range offrom about 10,000-about 75,000 mPas, preferably from about 12,000-about60,000 mPas, more preferably from about 13,000-about 50,000 mPas, mostpreferably from about 15,000-about 25,000 mPas, in each case measured at20° C. by employing a Brookfield rotational viscometer at a rotationalfrequency of 4 rpm with Spindle 5.

The agents as contemplated herein and used as contemplated hereincontain, in each case relative to their weight, at least one linearsaturated alcohol having two or three hydroxy groups and from 2 to 8carbon atoms in the alkyl group in a total quantity of from about0-about 3 wt. %, preferably from about 0.1-about 2.2 wt. %. Particularlypreferred linear saturated alkanols having two or three hydroxy groupsand from 2 to 8 carbon atoms in the alkyl group are selected from1,2-propandiol and glycerine, as well as mixtures thereof. Mostpreferred are from about 0-about 3 wt. %, preferably from about0.1-about 2.2 wt. % 1,2-propandiol, in each case relative to the weightof the agent. At least one linear saturated alkanol having two or threehydroxy groups and from 2 to 8 carbon atoms in the alkyl group,including 1,2-propandiol is also preferably contained, in a totalquantity of from about 0-about 3 wt. %, preferably from about 0.1-about2.2 wt. %, in each case relative to the weight of the agent.

The agents as contemplated herein and used as contemplated herein do notcontain any saturated or unsaturated non-alkoxylated alkanols having ahydroxy group and from 1 to about 50 carbon atoms in the alk(en)ylgroup; more particularly, the agents as contemplated herein contain noethanol, no isopropanol, no linear fatty alcohols such as cetyl- orstearyl alcohol, and no branched alkanols, such as 2-octyldodecanol.

Moreover, the agents as contemplated herein contain no saturated orunsaturated alkan carbonic acids having from 1 to about 50 carbon atoms,more particularly no oleic acids and no stearic acids or the saltsthereof.

Agents preferred as contemplated herein and preferably used ascontemplated herein are exemplified in that they contain, relative totheir weight, polyethylenglycol(s) having an average molecular weight offrom about 100 to about 100,000 g·mol⁻¹ in a total quantity of fromabout 0-about 0.2 wt. %, preferably from about 0-about 0.1 wt. %. Ascontemplated herein, polyethylene glycols are compounds of the formulaHO(CH₂CH₂O)_(n)H, wherein the index n denotes the degree ofpolymerization and is an integer from 3-about 2300.

It has emerged that saturated and unsaturated non-alkoxylated alkanolshaving a hydroxy group and from 1 to about 50 carbon atoms in thealk(en)yl group, more particularly ethanol and isopropanol, also linearsaturated alkanols with two or three hydroxy groups and from 2 to 8carbon atoms in the alkyl group and polyethylene glycols having anaverage molecular weight from about 100 to about 100,000 g·mol⁻¹ have anegative impact on the quality of the gel consistency, and therefore thetotal content thereof, as described above, should be limited and as lowas possible.

Moreover, agents preferred as contemplated herein and preferably used ascontemplated herein preferably contain fatty substances having a meltingpoint of about 30° C. and above at 1013 mbar and a water-solubility ofabout 0.005 wt. % and below in a total quantity of from about 0-about0.1 wt. %, preferably 0 wt. %, relative to the weight of the agent. Saidfatty substances include waxes, hardened oils and fats, as well asesters from fatty acids and fat alcohols having a melting point of about30° C. and over at 1013 mbar.

Agents preferred as contemplated herein and preferably used ascontemplated herein contain, in each case relative to their weight, atleast one oil in a total quantity of from about 0.1 to about 2 wt. %,preferably from about 0.2-about 1.5 wt. %, most preferably from about0.5-about 1 wt. %.

A further essential feature of the agent as contemplated herein is thecontent of at least one oxidation dye precursor.

On the basis of their reaction behavior, oxidative dye precursors can bedivided into two categories, so-called developer components and couplercomponents.

During the oxidative dyeing process, coupler components do not achieveany significant coloration by themselves. They always require thepresence of developer components. Developer components can combinetogether to form the actual dye.

The developer and coupler components are normally used in a free form.In the case of substances with amino groups, however, use of the saltform thereof, more particularly in the form of hydrochlorides andhydrobromides or sulfates, may be preferred. Oxidation dye precursorsinclude oxidation dye precursors of the developer and coupler types.Particularly suitable oxidation dye precursors of the developer type areselected from at least one compound from the group ofp-phenylenediamine, p-toluylenediamine,2-(2-hydroxyethyl)-p-phenylenediamine,2-(1,2-dihydroxyethyl)-p-phenylenediamine,N,N-bis(2-hydroxyethyl)-p-phenylenediamine,2-methoxymethyl-p-phenylenediamine,N-(4-amino-3-methylphenyl)-N-[3-(1H-imidazol-1-yl) propyl]amine,N,N′-bis(2-hydroxyethyl)-N,N′-bis-(4-aminophenyl)-1,3-diamino-propane-2-ol,bis-(2-hydroxy-5-aminophenyl) methane, 1,3-bis(2,5-diaminophenoxy)propan-2-ol, N, N′-bis(4-aminophenyl)-1,4-diazacycloheptane, 1,10-bis(2,5-diaminophenyl)-1,4,7,10-tetraoxadecane, p-aminophenol,4-amino-3-methylphenol, 4-amino-2-aminomethylphenol,4-amino-2-(1,2-dihydroxyethyl) phenol, 4-amino-2-(diethylaminomethyl)phenol, 4,5-diamino-1-(2-hydroxyethyl) pyrazole,2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine,2-hydroxy-4,5,6-triaminopyrimidine, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo [1,2-a] pyrazol-1-one and the physiologically toleratedsalts thereof. Most preferred developer components are selected fromp-toluylendiamine, 2-(2-hydroxyethyl)-p-phenylendiamine,N,N-bis-(2-hydroxyethyl)-p-phenylendiamine,2-methoxymethyl-p-phenylendiamine and/or4,5-diamino-1-(2-hydroxyethyl)-pyrazol and the physiologically toleratedsalts and mixtures thereof.

Particularly suitable oxidation dye precursors of the coupler type areselected from the group of 3-aminophenol, 5-amino-2-methylphenol,3-amino-2-chlor-6-methylphenol, 2-hydroxy-4-aminophenoxyethanol,5-amino-4-chlor-2-methylphenol, 5-(2-hydroxyethyl)-amino-2-methylphenol,2,4-dichlor-3-aminophenol, 2-aminophenol, 3-phenylendiamine,2-(2,4-diaminophenoxy)ethanol, 1,3-bis(2,4-diaminophenoxy)propane,1-methoxy-2-amino-4-(2-hydroxyethylamino)benzol(2-amino-4-[(2-hydroxyethyl)amino]-anisol),1,3-bis(2,4-diaminophenyl)propane,2,6-bis(2′-hydroxyethylamino)-1-methylbenzol,2-({3-[(2-hydroxyethyl)amino]-4-methoxy-5-methylphenyl}amino)ethanol,2-({3-[(2-hydroxyethyl)amino]-2-methoxy-5-methylphenyl}amino)ethanol,2-({3-[(2-hydroxyethyl)amino]-4,5-dimethylphenyl}amino)ethanol,2-[3-morpholin-4-ylphenyl)amino] ethanol,3-amino-4-(2-methoxyethoxy)-5-methylphenylamine,1-amino-3-bis-(2-hydroxyethyl)aminobenzol, resorcin, 2-methylresorcin,4-chlorresorcin, 1,2,4-trihydroxybenzol, 2-amino-3-hydroxypyridin,3-amino-2-methylamino-6-methoxypyridin,2,6-dihydroxy-3,4-dimethylpyridin, 3,5-diamino-2,6-dimethoxypyridin,1-phenyl-3-methylpyrazol-5-on, 1-naphthol, 1,5-dihydroxynaphthalin,2,7-dihydroxynaphthalin, 1,7-dihydroxynaphthalin,1,8-dihydroxynaphthalin, 4-hydroxyindol, 6-hydroxyindol, 7-hydroxyindol,4-hydroxyindolin, 6-hydroxyindolin, 7-hydroxyindolin or mixtures of saidcompounds or the physiologically compatible salts thereof. Mostpreferred coupler components are selected from 3-aminophenol,5-amino-2-methylphenol, 3-amino-2-chlor-6-methylphenol,2-hydroxy-4-aminophenoxyethanol, 2-(2,4-diaminophenoxy)ethanol,1-methoxy-2-amino-4-(2-hydroxyethylamino)benzol(2-Amino-4-[(2-hydroxyethyl)amino]-anisol), resorcin, 2-methylresorcin,4-chlorresorcin, 2-amino-3-hydroxypyridin, as well as thephysiologically compatible salts and mixtures thereof.

In a preferred embodiment, the dyes as contemplated herein contain oneor more oxidation dye precursors in a total quantity from about 0.001 toabout 5.0 wt. %, preferably from about 0.01 to about 4.0 wt. %, morepreferably from about 0.2 to about 3.5 wt. %, even more preferably fromabout 0.3 to about 2.5 wt. % and most preferably from about 0.7 to about1.8 wt. %, relative to the weight of the dye as contemplated hereinand/or the weight of the composition used as contemplated herein (M1).

In a preferred embodiment, the dyes as contemplated herein contain oneor more oxidation dye precursors, selected from at least one developercomponent and optionally at least one coupler component, in a totalquantity from about 0.001 to about 5.0 wt. %, preferably from about 0.01to about 4.0 wt. %, more preferably from about 0.2 to about 3.5 wt. %,even more preferably from about 0.3 to about 2.5 wt. % and mostpreferably from about 0.7 to about 1.8 wt. %, relative to the weight ofthe dye as contemplated herein and/or the weight of the composition usedas contemplated herein (M1).

In a more preferred embodiment of the present disclosure, the agent ascontemplated herein contains at least one partially-oxidizing dye.

In oxidative hair dyes, partially-oxidizing dyes often serve to tintunwanted red undertones, which can be produced by the melanindecomposition products, or to tint certain blond tones.

In order to obtain a balanced and subtle tint formation, the presentdisclosure may specify that the cosmetic agents with ODP additionallycontain at least one partially-oxidizing dye.

Partially-oxidizing dyes are dyes that coat the substrate itself and donot require an oxidative process to create the color.Partially-oxidizing dyes are usually nitro-phenylendiamines,nitroaminophenols, azo dyes, anthraquinones or indophenols.

Partially-oxidizing dyes can be sub-divided into anionic, cationic andnon-ionic partially-oxidizing dyes.

Preferred anionic partially-oxidizing dyes are the compounds known underthe designations Acid Yellow 1, Yellow 10, Acid Yellow 23, Acid Yellow36, Acid Orange 7, Acid Red 33, Acid Red 52, Pigment Red 57:1, Acid Blue7, Acid Green 50, Acid Violet 43, Acid Black 1, Acid Black 52 andtetrabromphenol blue.

Preferred cationic partially-oxidizing dyes are cationictriphenylmethane dyes, such as Basic Blue 7, Basic Blue 26, Basic Violet2 and Basic Violet 14, as well as aromatic systems, which aresubstituted with a quaternary nitrogen group, such as Basic Yellow 57,Basic Red 76, Basic Blue 99, Basic Brown 16 and Basic Brown 17 and HCBlue 16, as well as Basic Yellow 87, Basic Orange 31 and Basic Red 51.

Preferred non-ionic direct dyes are HC Yellow 2, HC Yellow 4, HC Yellow5, HC Yellow 6, HC Yellow 12, HC Orange 1, Disperse Orange 3, HC Red 1,HC Red 3, HC Red 10, HC Red 11, HC Red 13, HC Red BN, HC Blue 2, HC Blue11, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1,Disperse Violet 4, Disperse Black 9, as well as1,4-diamino-2-nitrobenzol, 2-amino-4-nitrophenol,1,4-bis-(2-hydroxyethyl)amino-2-nitrobenzol,3-nitro-4-(2-hydroxyethyl)aminophenol,2-(2-hydroxyethyl)amino-4,6-dinitrophenol,4-[(2-hydroxyethyl)amino]-3-nitro-1-methylbenzol,1-amino-4-(2-hydroxyethyl)amino-5-chlor-2-nitrobenzol,4-amino-3-nitrophenol, 1-(2′-Ureidoethyl)amino-4-nitrobenzol,2-[(4-amino-2-nitrophenyl)amino]benzoic acid,6-nitro-1,2,3,4-tetrahydrochinoxalin, 2-hydroxy-1,4-naphthochinon,picramic acid and the salts thereof, 2-amino-6-chloro-4-nitrophenol,4-ethylamino-3-nitrobenzoic acid and 2-chlor-6-ethylamino-4-nitrophenol.

Moreover, partially-oxidizing dyes that occur in nature, such as Hennared, Henna neutral, Henna black, chamomile blossoms sandalwood, blacktea, walnut, Cascara bark, sage, logwood, madder root, catechu, cederand alkanna root, can also be used.

The cosmetic agent according preferably contains at least onepartially-oxidizing agent in a total quantity of from about 0.001 toabout 10 wt. %, preferably from about 0.01 to about 8 wt. %, morepreferably from about 0.1 to about 5 wt. %, most preferably from about0.5 to about 2 wt. %, relative to the total weight of the cosmetic agentand/or of the composition used as contemplated herein (M1).

Therefore, a further subject of the present disclosure is akit-of-parts, comprising—packaged separately from one another:

a) at least one container (C1), containing an agent for oxidative hairdyeing containing the following, in each case relative to its weight:

-   -   from about 70 to about 95 wt. % water,    -   at least one oxidation dye precursor,    -   at least one alkalizing agent,    -   at least one tenside, selected from anionic, zwitterionic and        amphoteric tensides, as well as mixtures thereof, in a total        quantity of from about 0.1-about 2 wt. %,    -   Sodium polyacrylate in a total quantity of from about 0.1-about        1.5 wt. %, preferably from about 0.5-about 1.3 wt. %, more        preferably from about 0.8-about 11 wt. %, preferably with an        average molecular weight Mw in the range from about 1,000,000 to        about 20,000,000 Dalton, preferably from about 6,000,000 to        about 15,000,000 Dalton,    -   at least one linear, saturated alkanol with two or three hydroxy        groups and from 2 to 8 carbon atoms in the alkyl group in a        total quantity of from about 0-about 3 wt. %, wherein    -   no saturated or unsaturated non-alkoxylated alkanols with a        hydroxy group and from 1 to about 50 carbon atoms in the        alk(en)yl group and    -   no saturated or unsaturated alkanecarboxylic acids with 1 to 50        carbon atoms, and    -   no oxidants        are included in the agent, and        b) at least one container (C2), containing an oxidant        preparation (M2), which contains from about 40-about 96 wt. %,        preferably from about 70-about 93 wt. %, more preferably from        about 80-about 90 wt. % of water, also hydrogen peroxide in a        total quantity of from about 0.5 to about 23 wt. %, preferably        from about 2.5 to about 21 wt. %, more preferably from about 4        to about 20 wt. %, even more preferably from about 5 to about 18        wt. % and most preferably from about 6 to about 12 wt. %, and        which has a pH value in the range from about 2.0 to about 6.5,        preferably from about 2.5-about 5.5, more preferably from about        2.8 to about 5.0, in each case measured at 20° C., wherein each        of the wt. % values are relative to the weight of the oxidant        preparation (M2).

A further subject matter of the present disclosure is a method foroxidative hair dyeing comprising the following method steps:

i) Providing a cosmetic agent (M1) for the oxidative hair dyeing ofkeratinic fibers, containing

-   -   from about 70 to about 95 wt. % water,    -   at least one oxidation dye precursor,    -   at least one alkalizing agent,    -   at least one tenside, selected from anionic, zwitterionic and        amphoteric tensides, as well as mixtures thereof, in a total        quantity of from about 0.1-about 2 wt. %,    -   Sodium polyacrylate in a total quantity of from about 0.1-about        1.5 wt. %, preferably from about 0.5-about 1.3 wt. %, more        preferably from about 0.8-about 11 wt. %, preferably with an        average molecular weight Mw in the range from about 1,000,000 to        about 20,000,000 Dalton, preferably from about 6,000,000 to        about 15,000,000 Dalton,    -   at least one linear, saturated alkanol with two or three hydroxy        groups and from about 2 to about 8 carbon atoms in the alkyl        group in a total quantity of from about 0-about 3 wt. %, wherein    -   no saturated or unsaturated non-alkoxylated alkanols with a        hydroxy group and from 1 to about 50 carbon atoms in the        alk(en)yl group and    -   no saturated or unsaturated alkanecarboxylic acids with from 1        to about 50 carbon atoms, and    -   no oxidants        are included in the agent,        ii) Providing at least one oxidant preparation (M2), which        contains from about 40-about 96 wt. %, preferably from about        70-about 93 wt. %, more preferably from about 80-about 90 wt. %        of water, also hydrogen peroxide in a total quantity of from        about 0.5 to about 23 wt. %, preferably from about 2.5 to about        21 wt. %, more preferably from about 4 to about 20 wt. %, even        more preferably from about 5 to about 18 wt. % and most        preferably from about 6 to about 12 wt. %, and which has a pH        value in the range from about 2.0 to about 6.5, preferably from        v2.5-about 5.5, more preferably from about 2.8 to about 5.0, in        each case measured at 20° C., wherein each of the wt. % values        are relative to the weight of the oxidant preparation (M2),        wherein at least one cation tenside is optionally contained,        iii) Mixing the cosmetic agent (M1) with the oxidant preparation        (M2), preferably in a weight ratio (M1):(M2) in the range from        about 1:0.8 to about 1:2.5, preferably from about 1:1 to about        1:2, immediately afterwards        iv) Applying the mixture obtained in Step iii) onto the hair and        leaving said mixture for a period of from about 1 to about 60        minutes, preferably from about 20 to about 45 minutes at room        temperature and/or at from about 30-about 60° C., preferably at        from about 32-about 50° C. on the hair,        v) Rinsing the hair with water and/or a cleansing composition,        and        vi) where necessary, applying a post-treatment agent onto the        hair and, where necessary, rinsing out, then drying.

For oxidative hair dyeing, immediately before the application on thehair, the one or more oxidation dye precursors and, where applicable,one or more partially-oxidizing dyes, are usually mixed with a hydrousoxidant-containing composition (M2) to produce the ready-to-use dye andthen applied to the hair. In most cases, the agent as contemplatedherein (M1) and the oxidant-containing composition (M2) are matched withone another such that, at a mixing ratio of 1 to 1, relative to theparts by weight, the ready-to-use application mixture has an initialconcentration of hydrogen peroxide of from about 0.5-about 12 wt. %,preferably from about 2-about 10 wt. %, more preferably from about3-about 6 wt. % of hydrogen peroxide (calculated as 100% H₂O₂), in eachcase relative to the weight of the application mixture. However, it isequally possible for the agent as contemplated herein (M1) and theoxidant-containing composition (M2) to be matched to one another suchthat the concentrations required in the ready-to-use oxidant dye(application mixture) is achieved through mixture ratios other than 1:1,for example through a weight-based mixture ratio of 1:2 or 1:3 or even2:3.

Weight-based mixture ratios preferred as contemplated herein (M1):(M2)are within the range from about 1:0.8 to about 1:2.5, more preferablywithin the range of from about 1:1 to about 1:2.

As contemplated herein, the expression “room temperature” describes thetemperature inside the room in which a person would usually use a hairdye, i.e. usually a bathroom or a hairdressing salon, in which atemperature within the range of from about 10-about 29° C. prevails.

The leaving of the hair dyeing application mixture in method step iv) inthe hair dyeing method as contemplated herein or preferred ascontemplated herein can also occur at a minimum of about 30° C.,preferably at from about 30-about 60° C., more preferably at from about32-about 50° C., if the hair is heated by employing a heating hood or aheat radiator, for example.

The oxidant preparation (M2) used in the dye kit as contemplated hereinand preferred as contemplated herein, as well as in the dyeing method ascontemplated herein and preferred as contemplated herein contains, ineach case relative to the weight thereof, from about 40-about 96 wt. %,preferably from about 70-about 93 wt. %, most preferably from about80-about 90 wt. % of water.

The oxidant preparation (M2) used in the dye kit as contemplated hereinand preferred as contemplated herein, as well as in the dyeing method ascontemplated herein and preferred as contemplated herein contains, ineach case relative to the weight thereof, from about 0.5 to about 23 wt.%, preferably from about 2.5 to about 21 wt. %, more preferably fromabout 4 to about 20 wt. %, even more preferably from about 5 to about 18wt. and most preferably from about 6 to about 12 wt. % of hydrogenperoxide.

To stabilize the hydrogen peroxide, the oxidant preparation (M2) has apH value in the range from about 2.0 to about 6.5, preferably from about2.5-about 5.5, most preferably from about 2.8 to about 5.0, in each casemeasured at 20° C.

The relatively low viscosity of the agent preferred as contemplatedherein (M1) in the range of from about 10,000-about 75,000 mPas,preferably from about 12,000-about 60,000 mPas, more preferably fromabout 13,000-about 50,000 mPas, most preferably from about 15,000-about25,000 mPas, in each case measured at 20° C. by employing a Brookfieldrotational viscometer at a rotational frequency 4 rpm with Spindle 5, isideally suited to handle this agent per se (production, placing inplastic bottles, dispensing to produce the mixture with the oxidantpreparation).

Cation Tenside in the Oxidant Preparation (M2)

The oxidant preparation (M2) usually has a low viscosity in the range offrom about 10-about 6000 mPas, preferably from about 200-about 5000mPas, more preferably from about 1000-about 4500 mPas, in each casemeasured at 20° C. For application on the hair, however, the applicationmixture ought to have a substantially higher viscosity so that itremains on the hair for the entire exposure time (in the range of fromabout 5-about 60 minutes, preferably from about 30-about 45 minutes)without dripping. A distinction is drawn here as to whether theapplication mixture is produced by shaking the two compositions (M1) and(M2) in an application bottle, from which the application mixture isapplied to the hair immediately after mixing by employing an applicationnozzle in the form of a bottle attachment (bottle application), orwhether the application mixture is produced by stirring the twocompositions (M1) and (M2) in a bowl, from which the application ismixture is applied to the hair immediately after mixing by employing abrush (brush application). The bottle application is particularlysuitable for dyes that are sold in retail outlets trade with anapplication recommendation by the consumer itself. The brush applicationis particularly suitable for dyes that are produced in the hairdressingsalon and applied to the consumer's hair by the hairdresser.

It has unexpectedly emerged that an application mixture having aviscosity particularly suitable for brush application is obtained if theagent as contemplated herein or preferred as contemplated herein (M1) ismixed with an oxidant preparation (M2) containing at least one cationtenside. During the mixing process, the interaction between the at leastone sodium polyacrylate and the at least one cation tenside leads to thedesired viscosity increase. The pasty consistency of the applicationmixture thus obtained leads to optimum application properties, moreparticularly for the brush application. The application mixtures thusachieved, preferably with weight-based mixture ratios (M1):(M2) in therange of from about 1:0.8 to about 1:2.5, more preferably in the rangeof from about 1:1 to about 1:2, preferably have a viscosity in the rangeof from about 10000-about 100000 mPas, more preferably from about12000-about 80000 mPas, most preferably from about 15000-about 40000mPas, in each case measured at 20° C. (Brookfield viscometer, at arotational frequency of 4 rpm with Spindle No. 5).

In a more preferred embodiment of the present disclosure, the oxidantpreparation used as contemplated herein (M2) contains at least onecation tenside, preferably in a total quantity of from about 0.05-about3 wt. %, more preferably from about 0.1-about 1.5 wt. %, most preferablyfrom about 0.3-about 0.9 wt. %, in each case relative to the weight ofthe oxidant preparation (M2).

Cationic tensides are tensides, i.e. surfactant compounds, each havingone or more positive charges. Cationic tensides contain exclusivelypositive charges. Usually, said tensides are constructed from ahyrdophobic part and a hydrophilic head group, wherein the hydrophobicpart normally includes a hydrocarbon structure (e.g. including one ortwo linear or branched alkyl chains), and the positive charge(s) arelocalized in the hydrophilic head group. Cationic tensides adsorb atboundary surfaces and aggregate in hydrous solutions above the criticalmicelle formation concentration to form positively charged micelles.

As contemplated herein, preferred cationic tensides are of the type ofquaternary ammonium compounds, eterquats and alkyl amidoamines.Preferred quaternary ammonium compounds are ammonium halogenides, suchas alkyltrimethylammoniumchloride, dialkyldimethylammoniumchloride,trialkylmethylammoniumchloride, as well as the imidazolium compoundsknown under the INCI trade names of Quatemium-27 and Quatemium-83. Otherpreferred quaternery ammonium compounds are tetra alkyl ammonium salts,such as that known under the INCI trade name of Quaternium-52, apoly(oxy-1,2-ethanediyl),((octadecylnitrilio)tri-2,1-ethanediyl)tris(hydroxy)-phosphate(1:1)-salt, which has the general structural formula (III), whereinx+y+z=10 are

The long alkyl chains of the aforementioned tensides preferably havefrom 10 to about 22, more preferably from 12 to 18 carbon atoms.Particularly preferred are behenyl trimethyl ammonium chloride, stearyltrimethyl ammonium chloride and cetyl trimethyl ammonium chloride,wherein stearyl trimethyl ammonium chloride is most preferred. Othersuitable cationic tensides as contemplated herein are quaternary proteinhydrolysates. Alkylamidoamines are usually produced through theamidation of natural or synthetic fatty acids and fatty acid moleculeswith dialkylaminoamines. As contemplated herein, Tegoamid® S 18(stearamidopropyldimethylamin) is a suitable compound from thissubstance group. Esterquats are substances containing both at least oneester function and at least quaternary ammonium group as the structuralelement. Preferred esterquats are quaternated ester salts of fatty acidswith triethanolamine, quaternated ester salts of fatty acids withdiethanolalkyl amines and quaternated ester salts of fatty acids with1,2-dihydroxypropyldialkylamines. Such products are sold under the tradenames of Stepantex, Dehyquart and Armocare.

With respect to optimum application properties and optimum dye results,C10-C22 alkyl trimethyl ammonium chloride has proved to be particularlysuitable. Particularly preferred oxidant preparations used ascontemplated herein (M2) are therefore exemplified in that they containat least one cation tenside in a total quantity from about 0.1-about 1.5wt. %, most preferred from about 0.3-about 0.9 wt. %, in each caserelative to the weight of the oxidant preparation (M2), whereinpreferably at least one tenside, selected from C10-C22 alkyl trimethylammonium chlorides, most preferably selected from behenyl trimethylammonium chloride, stearyl trimethyl ammonium chloride and cetyltrimethyl ammonium chloride, as well as mixtures of said tensides, iscontained. Oxidant preparations most preferred as contemplated herein(M2) contain stearyltrimethylammoniumchloride in a total quantity fromabout 0.05-about 3 wt. %, preferably from about 0.1-about 1.5 wt. %,more preferably from about 0.3-about 0.9 wt. %, in each case relative tothe weight of the oxidant preparation (M2).

A further kit-of-parts preferred as contemplated herein is exemplifiedin that the oxidant preparation (M2) contains at least one cationtenside, preferably in a total quantity of from about 0.05-about 3 wt.%, more preferably from about 0.1-about 1.5 wt. %, most preferably fromabout 0.3-about 0.9 wt. %, in each case relative to the weight of theoxidant preparation (M2), but contains no polymer with a polymerizationdegree of at least about 200 and no polymer with a molecular weight ofabout 10,000 Dalton or higher.

It has emerged that the thickening aided by the interaction between thecopolymer in the agent as contemplated herein and the cation tenside inthe oxidant preparation (M2) is adequate, and due to the presence of apolymer with a polymerization degree of at least about 200 or a polymerwith a molecular weight of about 10,000 Dalton or higher, is unable tofurther increase and/or even be adversely affected in terms of itsapplication properties.

A further kit-of-parts preferred as contemplated herein is exemplifiedin that the oxidant preparation (M2) contains at least one cationtenside, which is preferably selected from stearyltrimethyl ammoniumchloride, preferably in a total quantity of from about 0.05-about 3 wt.%, more preferably from about 0.1-about 1.5 wt. %, most preferably fromabout 0.3-about 0.9 wt. %, in each case relative to the weight of theoxidant preparation (M2), but contains no polymer with a polymerizationdegree of at least about 200 and no polymer with a molecular weight ofabout 10,000 Dalton or higher.

A method for oxidative hair dyeing as contemplated herein is exemplifiedin that the oxidant preparation (M2) contains at least one cationtenside, preferably in a total quantity of from about 0.05-about 3 wt.%, more preferably from about 0.1-about 1.5 wt. %, most preferably fromabout 0.3-about 0.9 wt. %, in each case relative to the weight of theoxidant preparation (M2), but contains no polymer with a polymerizationdegree of at least about 200 and no polymer with a molecular weight ofabout 10,000 Dalton or higher.

A further method for oxidative hair dyeing as contemplated herein isexemplified in that the oxidant preparation (M2) contains at least onecation tenside, which is preferably selected from stearyltrimethylammonium chloride, preferably in a total quantity of from about0.05-about 3 wt. %, more preferably from about 0.1-about 1.5 wt. %, mostpreferably from about 0.3-about 0.9 wt. %, in each case relative to theweight of the oxidant preparation (M2), but contains no polymer with apolymerization degree of at least about 200 and no polymer with amolecular weight of about 10,000 Dalton or higher.

It has unexpectedly emerged that an application mixture having aviscosity particularly suitable for bottle application is obtained ifthe agent as contemplated herein or preferred as contemplated herein(M1) is mixed with an oxidant preparation (M2) containing at least onecopolymer, selected from cross-linked acrylic acid/acrylicacid-C1-C6-alkyl ester copolymers and cross-linked methacrylicacid/acrylic acid-C1-C6-alkyl ester copolymers, preferably in a totalquantity from about 0.1-about 7 wt. %, more preferably from about0.5-about 6 wt. %, most preferably from about 1-about 4.5 wt. %, in eachcase relative to the weight of the oxidant preparation (M2). The mixingof the agent as contemplated herein or preferred as contemplated hereinwith such an oxidation preparation (M2) leads to the desired viscosityincrease. The medium-viscosity consistency of the application mixturethus obtained leads to optimum application properties, more particularlyfor the bottle application. The application mixtures thus achieved,preferably with weight-based mixture ratios (M1):(M2) in the range offrom about 1:0.8 to about 1:2.5, more preferably in the range of fromabout 1:1 to about 1:2, preferably have a viscosity in the range of fromabout 2000-about 50,000 mPas, more preferably from about 5000-about40,000 mPas, even more preferably from about 8,000-about 30,000 mPas,most preferably from about 11,000-about 24,000 mPas, in each casemeasured at 20° C. (Brookfield viscometer, at a rotational frequency of4 rpm with Spindle No. 5).

A further kit-of-parts preferred as contemplated herein is exemplifiedin that the oxidant preparation (M2) contains at least one copolymer,selected from cross-linked acrylic acid/acrylic acid —C1-C6 alkylester-copolymers and cross-linked methacrylic acid/acrylicacid-C1-C6-alkyl ester copolymers, preferably in a total quantity offrom about 0.1-about 7 wt. %, more preferably from about 0.5-about 6 wt.%, most preferably from about 1-about 4.5 wt. %, in each case relativeto the weight of the oxidant preparation (M2), and preferably containsno cation tenside.

A further method for oxidative hair dyeing as contemplated herein isexemplified in that the oxidant preparation (M2) contains at least onecopolymer, selected from cross-linked acrylic acid/acrylic acid —C1-C6alkyl ester-copolymers and cross-linked methacrylic acid/acrylicacid-C1-C6-alkyl ester copolymers, preferably in a total quantity offrom about 0.1-about 7 wt. %, more preferably from about 0.5-about 6 wt.%, most preferably from about 1-about 4.5 wt. %, in each case relativeto the weight of the oxidant preparation (M2), and preferably containsno cation tenside.

Preferred cross-linked copolymers of this type are selected from—in eachcase cross-linked—methacrylic acid/methylacrylate-, methacrylicacid/ethylacrylate-, methacrylic acid/propylacrylate-, methacrylicacid/butylacrylate-, methacrylic acid/pentylacrylate-, methacrylicacid/hexylacrylate-, acrylic acid/methylacrylate-, acrylicacid/ethylacrylate-, acrylic acid/propylacrylate-, acrylicacid/butylacrylate-, acrylic acid/pentylacrylate- and acrylicacid/hexylacrylate copolymers and the mixtures thereof.

A further kit-of-parts preferred as contemplated herein is exemplifiedin that the oxidant preparation (M2) contains at least one cross-linkedcopolymer, selected from—in each case cross-linked—methacrylicacid/methylacrylate-, methacrylic acid/ethylacrylate-, methacrylicacid/propylacrylate-, methacry acid/butyl acrylate-, methacrylicacid/pentylacrylate-, methacrylic acid/hexylacrylate-, acrylicacid/methyl acrylate-, acrylic acid/ethyl acrylate-, acrylicacid/propylacrylate-, acrylic acid/butylacrylate, acrylic acid/pentylacrylate- and acrylic acid/hexylacrylate-copolymers and mixturesthereof, in a total quantity from about 0.1-about 7 wt. %, preferablyfrom about 0.5-about 6 wt. %, most preferably from about 1-about 4.5 wt.%, in each case relative to the weight of the oxidant preparation (M2),and no cation tenside.

A further method preferred as contemplated herein is exemplified in thatthe oxidant preparation (M2) contains at least one cross-linkedcopolymer, selected from—in each case cross-linked—methacrylicacid/methylacrylate-, methacrylic acid/ethylacrylate-, methacrylicacid/propylacrylate-, methacry acid/butyl acrylate-, methacrylicacid/pentylacrylate-, methacrylic acid/hexylacrylate-, acrylicacid/methyl acrylate-, acrylic acid/ethyl acrylate-, acrylicacid/propylacrylate-, acrylic acid/butylacrylate, acrylic acid/pentylacrylate- and acrylic acid/hexylacrylate-copolymers and mixturesthereof, in a total quantity from about 0.1-about 7 wt. %, preferablyfrom about 0.5-about 6 wt. %, most preferably from about 1-about 4.5 wt.%, in each case relative to the weight of the oxidant preparation (M2),and no cation tenside.

Moreover, the oxidant preparations as contemplated herein and preferredas contemplated herein (M2) can contain stabilizers, more particularlycomplexing agents, and pH buffer substances.

In a more preferred embodiment of the present disclosure, the oxidantpreparation used as contemplated herein (M2) contains at least one oilin a total quantity of from about 0.2-about 50 wt. %, preferably fromabout 2-about 40 wt. %, more preferably from about 8-about 30 wt. %,most preferably from about 15-about 25 wt. %, in each case relative tothe weight of the oxidant preparation (M2).

In a most preferred embodiment of the present disclosure, the oxidantpreparation used as contemplated herein (M2) contains at least one oilin a total quantity of from about 0.2-about 50 wt. %, preferably fromabout 2-about 40 wt. %, more preferably from about 8-about 30 wt. %,most preferably from about 15-about 25 wt. %, in each case relative tothe weight of the oxidant preparation (M2).

The at least one oil contained in the oxidant preparation (M2) in atotal quantity of from about 0.2-about 50 wt. %, relative to the weightof the preparation (M2), is preferably selected from natural andsynthetic hydrocarbons, most preferably from mineral oil, paraffin oils,C₁₈-C₃₀ isoparaffins, particularly isoeicosane, polyisobutenes andpolydecenes, C₈-C₁₆ isoparaffins, as well as1,3-di-(2-ethylhexyl)-cyclohexane; the benzoic acid esters of linear orbranched C₈₋₂₂ alkanols; triglycerides of linear or branched, saturatedor unsaturated, where necessary hydroxylated C₈₋₃₀ fatty acids,particularly natural oils; the dicarboxylic acid esters of linear orbranched C₂-C₁₀ alkanols; the esters of linear or branched saturated orunsaturated fat alcohols having from 2-about 30 carbon atoms with linearor branched saturated or unsaturated fatty acids having from 2-about 30carbon atoms, which can be hydroxylated; the adducts of from 1 to 5propylenoxide units of monovalent or multivalent C₈₋₂₂alkanols; theC₈-C₂₂ fatty alcohol esters of monovalent or multivalentC₂-C₇hydroxycarboxylic acids; the symmetrical, asymmetrical or cyclicalesters of carbonic acids having C₃₋₂₂ alkanols, C₃₋₂₂ alkandiols orC₃₋₂₂ alkantriols; the esters of dimers of unsaturated C₁₂-C₂₂ fatalcohols (dimer fatty acids) having monovlaent linear, branched orcyclical C₂-C₁₈ alkanols or having monovalent linear or branched C₂-C₆alkanols; silicone oils, as well as mixtures of the aforementionedsubstances. In this context, oils particularly preferred as contemplatedherein are selected from paraffin oils and the esters of linear orbranched saturated or unsaturated fat alcohols having from 2-about 30carbon atoms with linear or branched fatty acids having from 2-about 30carbon atoms, which can be hydroxylated, as well as mixtures thereof,most preferred oils are selected from paraffin oil, isopropylpalmitateand isopropylmyristate, as well as mixtures thereof.

In a more preferred embodiment of the present disclosure, the oxidantpreparation used as contemplated herein (M2) contains at least onetenside, selected from anion tensides and niotensides, as well asmixtures thereof, in a total quantity of from about 0.05-about 2 wt. %,preferably from about 0.3-about 1.5 wt. %, and at least one linear,saturated 1-alkanol having from 14 to about 22 carbon atoms, selectedfrom 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol),1-octadecanol (stearyl alcohol) and 1-eicosanol (arachylalcohol), aswell as mixtures thereof, in a total quantity from about 1-about 5 wt.%, preferably from about 1.5-about 4 wt. %, wherein the quantity valuesare relative to the weight of the oxidant preparation (M2), and whereinthe preparation (M2) contains no cation tensides, no oils, no polymerswith a polymerization degree of at least about 200 and no polymers witha molecular weight of about 10,000 Dalton or higher.

A more preferred kit-of-parts as contemplated herein and a morepreferred hair dyeing method as contemplated herein are each exemplifiedin that the oxidation preparation (M2) contains at least one tenside,selected from anion tensides and niotensides, as well as mixturesthereof, in a total quantity of from about 0.05-about 2 wt. %,preferably from about 0.3-about 1.5 wt. %, and at least one linear,saturated 1-alkanol having from 14 to about 22 carbon atoms, selectedfrom 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol),1-octadecanol (stearyl alcohol) and 1-eicosanol (arachyl alcohol), aswell as mixtures thereof, in a total quantity of from about 1-about 5wt. %, preferably from about 1.5-about 4 wt. %, each relative to theweight of the oxidant preparation (M2).

A more preferred kit-of-parts as contemplated herein and a morepreferred hair dyeing method as contemplated herein are each exemplifiedin that the oxidation preparation (M2) contains at least one tenside,selected from anion tensides and niotensides, as well as mixturesthereof, in a total quantity of from about 0.05-about 2 wt. %,preferably from about 0.3-about 1.5 wt. %, and at least one linear,saturated 1-alkanol having from 14 to about 22 carbon atoms, selectedfrom 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol),1-octadecanol (stearyl alcohol) and 1-eicosanol (arachyl alcohol), aswell as mixtures thereof, in a total quantity of from about 1-about 5wt. %, preferably from about 1.5-about 4 wt. %, each relative to theweight of the oxidant preparation (M2), although no polymers having apolymerization degree of at least about 200 and no polymer having amolecular weight of about 10,000 Dalton or higher.

It has emerged that the thickening aided by the interaction between thecopolymer in the agent as contemplated herein and the aforementionedtenside/1-alkanol mixture in the oxidant preparation (M2) is adequate,and due to the presence of a polymer with a polymerization degree of atleast about 200 or a polymer with a molecular weight of about 10000Dalton or higher, is unable to further increase and/or even be adverselyaffected in terms of its application properties.

A more preferred kit-of-parts as contemplated herein and a morepreferred hair dyeing method as contemplated herein are each exemplifiedin that the oxidation preparation (M2) contains at least one tenside,selected from anion tensides and niotensides, as well as mixturesthereof, in a total quantity of from about 0.05-about 2 wt. %,preferably from about 0.3-about 1.5 wt. %, at least one linear,saturated 1-alkanol having from 14 to about 22 carbon atoms, selectedfrom 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol),1-octadecanol (stearyl alcohol) and 1-eicosanol (arachyl alcohol), aswell as mixtures thereof, in a total quantity of from about 1-about 5wt. %, preferably from about 1.5-about 4 wt. %, and at least one oil ina total quantity of from about 0.2-about 50 wt. %, preferably from about2-about 40 wt. %, more preferably from about 8-about 30 wt. %, mostpreferably from about 15-about 25 wt. %, each relative to the weight ofthe oxidant preparation (M2).

A more preferred kit-of-parts as contemplated herein and a morepreferred hair dyeing method as contemplated herein are each exemplifiedin that the oxidation preparation (M2) contains at least one tenside,selected from anion tensides and niotensides, as well as mixturesthereof, in a total quantity of from about 0.05-about 2 wt. %,preferably from about 0.3-about 1.5 wt. %, at least one linear,saturated 1-alkanol having from 14 to about 22 carbon atoms, selectedfrom 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol),1-octadecanol (stearyl alcohol) and 1-eicosanol (arachyl alcohol), aswell as mixtures thereof, in a total quantity of from about 1-about 5wt. %, preferably from about 1.5-about 4 wt. %, and at least one oil ina total quantity of from about 0.2-about 50 wt. %, preferably from about2-about 40 wt. %, more preferably from about 8-about 30 wt. %, mostpreferably from about 15-about 25 wt. %, each relative to the weight ofthe oxidant preparation (M2), although no polymers having apolymerization degree of at least about 200 and no polymers having amolecular weight of about 10,000 Dalton or higher.

Anionic tensides suitable for the oxidant preparations as contemplatedherein (M2) are all the anionic tensides discussed above for the agentas contemplated herein (M1).

Non-ionic tensides suitable for the oxidant preparations used ascontemplated herein (M2) are all anionic surfactants, suitable for useon the human body, which have at least one non-ionic group that rendersthem water-soluble, more particularly a polyethylene glycol ether grouphaving at least 2 ethylene oxide units, a glycoside group, moreparticularly a glucose or methyl glucose group, a poly glycoside groupwith an average of more than one glycoside unit, one polyglycerine grouphaving at least two glycerine units, one sorbitan group, one amid groupor several different of said groups, for example a sorbitan group and apolyethylene glycol ether group, and one lipophilic alkyl group havingapproximately 8 to about 30 C-atoms, preferably from 10 to about 24C-atoms. The non-ionic tensides most preferably used are selected from,having from 7-about 80 mol of ethylene oxide per mol, ethoxylated castoroil, ethoxylated C₈-C₃₀ alkanols having from 4-about 100 mol ethyleneoxide per mol, ethoxylated C₈-C₂₄carbonic acid having from 5-about 30mol of ethylene oxide per mol, having 4-about 50 mol of ethylene oxideper mol of sorbitan monoesters of linear saturated and unsaturatedC₁₂-C₃₀ carbonic acids, which can be hydroxylated, more particularlythose from myristiric acid, palmitic acid, stearic acid of mixtures ofsaid fatty acids, alkylmono and oligoglycosides having from 8 to about22 carbon atoms in the alkyl radical and the ethoxylated analogsthereof, as well as mixtures of the aforementioned substances.

The ethoxylated C₈-C₃₀ alkanols have the formula R¹O(CH₂CH₂O)_(n)H,wherein R¹ denotes a linear or branched alkyl and/or alkenyl radicalhaving from 8-about 30 carbon atoms and n, the average number ofethylene oxide units per molecule, for integers from about 4-about 100,preferably from about 6-about 30, more preferably from about 12 to about20 mol ethylene oxide to 1 mol alkanol, which is preferably selectedfrom capryl alcohol, 2-ethylhexyl alcohol, caprin alcohol, laurylalcohol, isotridecyl alcohol, tridecyl alcohol, myristyl alcohol, cetylalcohol, palmitoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleylalcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol,gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brassidyl alcohol,as well as the technical mixtures thereof. Adducts from 10-about 100 molethylene oxide on technical fat alcohols having from 12-18 carbon atoms,such as for example coco, palm, palm kernel or sebum fat alcohols arealso suitable. Trideceth-6, Isotrideceth-6, Undeceth-6, Myreth-6,Laureth-10, Laureth-12, Laureth-15, Laureth-20, Laureth-30, Myreth-10,Myreth-12, Myreth-15, Myreth-20, Myreth-30, Ceteth-10, Ceteth-12,Ceteth-15, Ceteth-20, Ceteth-30, Steareth-10, Steareth-12, Steareth-15,Steareth-20, Steareth-30, Oleth-10, Oleth-12, Oleth-15, Oleth-20,Oleth-30, Ceteareth-10, Ceteareth-15, Ceteareth-12, Ceteareth-15,Ceteareth-20, Ceteareth-30, as well as Coceth-10, Coceth-12, Coceth-15,Coceth-20 and Coceth-30 are more preferred; Ceteth-10, Ceteth-12,Ceteth-15, Ceteth-20, Ceteth-30, Steareth-10, Steareth-12, Steareth-15,Steareth-20 and Steareth-30, as well as the mixtures thereof, are mostpreferred.

The ethoxylated C₈-C₃₀ carbonic acids have the formulaR¹O(CH₂CH₂O)_(n)H, wherein R¹O denotes a linear or branched, saturatedor unsaturated acyl radical having from 8-30 carbon atoms and n, theaverage number of ethylene oxide units per molecule, for integers from5-30, preferably from about 6-about 20, more preferably from about 6 toabout 12 mol ethylene oxide to 1 mol C₈-C₃₀ carbonic acid, which ispreferably selected from capryl alcohol, 2-ethylhexyl alcohol, caprinalcohol, lauric acid, isotridecaric acid, myristiric acid, cetyl acid,palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidicacid, petroselic acid, arachine acid, gadoleic acid, behenic acid,erucic acid and brassidic acid, as well as the technical mixturesthereof. Adducts from 5-about 30, preferably from 6-about 20, morepreferably from 6 to 12 mol of ethylene oxide on technical fatty acidshaving from 12-18 carbon atoms, such as coco, palm, palm kernel or sebumfat alcohols are also suitable.

With respect to the cosmetic agent (M1) in container C₁ and the oxidantpreparation (M2) in container C₂ of the kit as contemplated herein andpreferred as contemplated herein, the statements made about the agentsas contemplated herein and preferred as contemplated herein applymutatis mutandis.

With respect to the cosmetic agent (M1) in container C₁ and the methodfor oxidative hair dyeing as contemplated herein and preferred ascontemplated herein, the statements made about the agents ascontemplated herein and preferred as contemplated herein apply mutatismutandis.

With respect to oxidant preparation (M2) in container C₁ and the methodfor oxidative hair dyeing as contemplated herein and preferred ascontemplated herein, the statements made about the oxidant preparations(M2) of the kits as contemplated herein and preferred as contemplatedherein apply mutatis mutandis.

The subject matter of the present disclosure is summarized as follows:

1. Agent for oxidative hair dyeing containing, relative to the weight ofthe agent in each case,

-   -   from about 70 to about 95 wt. % water,    -   at least one oxidation dye precursor,    -   at least one alkalizing agent,    -   at least one tenside, selected from anionic, zwitterionic and        amphoteric tensides, as well as mixtures thereof, in a total        quantity of from about 0.1-about 2 wt. %,    -   Sodium polyacrylate in a total quantity of from about 0.1-about        1.5 wt. %, preferably from about 0.5-about 1.3 wt. %, most        preferably from about 0.8-about 1.1 wt. %,    -   at least one linear, saturated alkanol with two or three hydroxy        groups and from 2 to 8 carbon atoms in the alkyl group in a        total quantity of from about 0-about 3 wt. %, wherein    -   no saturated or unsaturated non-alkoxylated alkanols with a        hydroxy group and from 1 to about 50 carbon atoms in the        alk(en)yl group and    -   no saturated or unsaturated alkanecarboxylic acids with from 1        to about 50 carbon atoms, and    -   no oxidants        are included in the agent.        2. Agent according to Item 1, exemplified in that the alkalizing        agent is selected from the group comprising ammonium hydroxide,        basic amino acids, alkalihydroxides, alkanolamines, alkali metal        metasilicates, alkali phosphates and alkali hydrogen phosphates,        as well as the mixtures thereof.        3. Agent according to Items 1 or 2, exemplified in that the at        least one anionic or zwitterionic tenside is selected from        C₈-C₂₀ alkyl sulphates, C₈-C₂₀-alkyl ether sulfphates and C₈-C₂₀        ether carboxylic acids, each with from 8 to about 20 C-atoms in        the alkyl group and from 0 to 12 ethylene oxide groups in the        molecule, wherein sodium laureth(2)sulphate is particularly        preferred, moreover from coco-acylaminopropyl-dimethyl ammonium        glycinate, as well as from mixtures of said tensides, wherein        preferably at least one anion or zwitteriontenside is contained        in a total quantity of from about 0.3-about 1.5 wt. %,        preferably from about 0.5-about 1.2 wt. %, relative to the        weight of the agent in each case.        4. Agent according to one of Items 1-3, exemplified in that        sodium polyacrylate has an average molecular weight Mw in the        range from about 1,000,000 to about 20,000,000 Dalton,        preferably from about 6,000,000 to about 15,000,000 Dalton.        5. Agent according to one of Items 1-4, exemplified in that        sodium polyacrylate is used pregelled in a water-in-oil        emulsion.        6. Agent according to one of Item 5, exemplified in that said        water-in-oil emulsion, contains, relative to the weight thereof        in each case, from about 40-about 60 wt. % sodium polyacrylate,        from about 25-about 45 wt. % oil(s) in total, preferably mineral        oil, from about 0.5-about 4.9 wt. % tenside(s) in total,        preferably from about 0.5-about 4.9 wt. % niotenside(s), and        from about 0.5-about 4.9 wt. % water.        7. Agent according to one of Items 1-6, exemplified by a        viscosity in the range of from about 10,000-about 75,000 mPas,        preferably from about 12,000-about 60,000 mPas, more preferably        from about 13,000-about 50,000 mPas, most preferably from about        15,000-about 25,000 mPas, in each case measured at 20° C. by        employing a Brookfield rotational viscometer at a rotational        frequency of 4 rpm with Spindle 5.        8. Agent according to one of claims 1-7, exemplified by a pH        value in the range of from about 8-about 12, preferably from        about 9-about 11.5, more preferably from about 9.5-about 10.5,        in each case measured at 20° C.        9. Agent according to one of Items 1-8, exemplified in that at        least one cross-linked copolymer from acrylic acid and        non-ethoxylated esters of the acrylic acid with linear C10-C30        mono-alcohols is contained, which is preferably selected from        copolymers having the INCI trade name Acrylates/C10-30 Alkyl        Acrylate Crosspolymer.        10. Agent according to Item 9, exemplified in that at least one        cross-linked copolymer from acrylic acid and non-ethoxylated        esters of the acrylic acid with linear C10-C30 mono-alcohols are        contained in a total quantity of from about 0.05-about 2 wt. %,        preferably from about 0.1-about 1.5 wt. %, more preferably from        about 0.3-about 1 wt. %, most preferably from about 0.5-about        0.8 wt. %, in each case relative to the weight of the agent.        11. Agent according to one of Items 1-10, exemplified in that,        relative to their weight, polyethylenglycol(s) having an average        molecular weight of from about 100 to about 100,000 g·mol⁻¹ in a        total quantity of from about 0-about 0.2 wt. %, preferably from        about 0-about 0.1 wt. % are contained.        12. Agent according to one of Items 1-11, exemplified in that        fatty substances having a melting point of about 30° C. and        above at 1013 mbar and a water-solubility of about 0.005 wt. %        and below in a total quantity of from about 0-about 0.1 wt. %,        preferably 0 wt. %, relative to the weight of the agent, are        contained.        13. Kit-of-parts comprising—packaged separately from one        another—        a) at least one container (C1), containing a cosmetic agent        according to one of claims 1 to 12, and        b) at least one container (C2), containing an oxidant        preparation (M2), which contains from about 40-about 96 wt. %,        preferably from about 70-about 93 wt. %, more preferably from        about 80-about 90 wt. % of water, also hydrogen peroxide in a        total quantity of from about 0.5 to about 23 wt. %, preferably        from about 2.5 to about 21 wt. %, more preferably from about 4        to about 20 wt. %, even more preferably from about 5 to about 18        wt. % and most preferably from about 6 to about 12 wt. %, and        which has a pH value in the range from about 2.0 to about 6.5,        preferably from about 2.5-about 5.5, more preferably from about        2.8 to about 5.0, in each case measured at 20° C., wherein each        of the wt. % values are relative to the weight of the oxidant        preparation (M2).        14. Kit-of-parts according to Item 13, exemplified in that the        oxidant preparation (M2) contains at least one cation tenside,        preferably in a total quantity of from about 0.05-about 3 wt. %,        more preferably from about 0.1-about 1.5 wt. %, most preferably        from about 0.3-about 0.9 wt. %, in each case relative to the        weight of the oxidant preparation (M2).        15. Kit-of-parts according to Item 14, exemplified in that the        oxidant preparation (M2) contains no polymer with a        polymerization degree of at least about 200 and no polymer with        a molecular weight of about 10000 Dalton or higher.        16. Kit-of-parts according to Item 13, exemplified in that the        oxidant preparation (M2) contains at least one copolymer,        selected from cross-linked acrylic acid/acrylic acid —C1-C6        alkyl ester-copolymers and cross-linked methacrylic acid/acrylic        acid-C1-C6-alkyl ester copolymers, preferably in a total        quantity of from about 0.1-about 7 wt. %, more preferably from        about 0.5-about 6 wt. %, most preferably from about 1-about 4.5        wt. %, in each case relative to the weight of the oxidant        preparation (M2), and preferably contains no cation tenside.        17. Method for oxidative hair dyeing, comprising the following        method steps:        i) Providing a cosmetic agent (M1) according to one of the items        1 to 12,        ii) Providing an oxidant preparation (M2), which contains from        about 40-about 96 wt. %, preferably from about 70-about 93 wt.        %, more preferably from about 80-about 90 wt. % of water, also        hydrogen peroxide in a total quantity of from about 0.5 to about        23 wt. %, preferably from about 2.5 to about 21 wt. %, more        preferably from about 4 to about 20 wt. %, even more preferably        from about 5 to about 18 wt. % and most preferably from about 6        to about 12 wt. %, and which has a pH value in the range from        about 2.0 to about 6.5, preferably from about 2.5-about 5.5,        more preferably from about 2.8 to about 5.0, in each case        measured at 20° C., wherein each of the wt. % values are        relative to the weight of the oxidant preparation (M2), wherein        optionally, either at least one cation tenside or at least one        copolymer, selected from cross-linked acrylic acid/acrylic        acid-C1-C6-alkyl ester-copolymers and cross-linked methacrylic        acid/acrylic acid-C1-C6-alkyl ester-copolymers is contained.        iii) Mixing the cosmetic agent (M1) with the oxidant preparation        (M2), preferably in a weight ratio (M1):(M2) in the range from        about 1:0.8 t about o 1:2.5, preferably from about 1:1 to about        1:2, immediately afterwards        iv) Applying the mixture obtained in Step iii) onto the hair and        leaving said mixture for a period of from about 1 to about 60        minutes, preferably from about 20 to about 45 minutes at room        temperature and/or at from about 30-about 60° C., preferably at        from about 32-about 50° C. on the hair,        v) Rinsing the hair with water and/or a cleansing composition,        and        vi) where necessary, applying a post-treatment agent onto the        hair and, where necessary, rinsing out, then drying.        18. Method for oxidative hair dyeing according to Item 17,        exemplified in that the oxidant preparation (M2) contains at        least one cation tenside, preferably in a total quantity of from        about 0.05-about 3 wt. %, more preferably from about 0.1-about        1.5 wt. %, most preferably from about 0.3-about 0.9 wt. %, in        each case relative to the weight of the oxidant preparation        (M2), and contains no polymer with a polymerization degree of at        least about 200 and no polymer with a molecular weight of about        10000 Dalton or higher.        19. Method for oxidative hair dyeing according to Item 17,        exemplified in that the oxidant preparation (M2) contains at        least one copolymer, selected from cross-linked acrylic        acid/acrylic acid —C1-C6 alkyl ester-copolymers and cross-linked        methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers,        preferably in a total quantity of from about 0.1-about 7 wt. %,        more preferably from about 0.5-about 6 wt. %, most preferably        from about 1-about 4.5 wt. %, in each case relative to the        weight of the oxidant preparation (M2), and preferably contains        no cation tenside.        20. Method for oxidative hair dyeing, comprising the following        method steps:        i) Providing a cosmetic agent (M1) according to one of the items        1 to 12,        ii) Providing an oxidant preparation (M2), containing from about        40-about 96 wt. %, preferably from about 70-about 93 wt. %, more        preferably from about 80-about 90 wt. % of water, also hydrogen        peroxide in a total quantity of from about 0.5 to about 23 wt.        %, preferably from about 2.5 to about 21 wt. %, more preferably        from about 4 to about 20 wt. %, even more preferably from about        5 to about 18 wt. % and most preferably from about 6 to about 12        wt. %, and a pH value in the range from about 2.0 to about 6.5,        preferably from about 2.5-about 5.5, most preferably from about        2.8 to about 5.0, having, in each case measured at 20° C.,        wherein preferably at least one tenside, selected from anion        tensides and niotensides, as well as mixtures thereof, in a        total quantity from about 0.05-about 2 wt. %, preferably from        about 0.3-about 1.5 wt. %, and at least one linear, saturated        1-alkanol having from 14 to about 22 carbon atoms, selected from        1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl        alcohol), 1-octadecanol (stearyl alcohol) and 1-eicosanol        (arachyl alcohol) as well as mixtures thereof, in a total        quantity from about 1-about 5 wt. %, preferably from about        1.5-about 4 wt. %, wherein optionally at least one oil in a        total quantity of from about 0.2-about 50 wt. %, preferably from        about 2-about 40 wt. %, more preferably from about 8-about 30        wt. %, most preferably from about 15-about 25 wt. %, and/or        optionally at least one cation tenside, preferably in a total        quantity of from about 0.05-about 3 wt. %, more preferably from        about 0.1-about 1.5 wt. %, most preferably from about 0.3-about        0.9 wt. %, is contained, wherein all quantity data are relative        to the weight of the oxidant preparation (M2),        iii) Mixing the cosmetic agent (M1) with the oxidant preparation        (M2), preferably in a weight ratio (M1):(M2) in the range from        about 1:0.8 to about 1:2.5, preferably from about 1:1 to about        1:2, immediately afterwards        iv) Applying the mixture obtained in Step iii) onto the hair and        leaving said mixture for a period of from about 1 to about 60        minutes, preferably from about 20 to about 45 minutes at room        temperature and/or at from about 30-about 60° C.,        v) Rinsing the hair with water and/or a cleansing composition,        and        vi) where necessary, applying a post-treatment agent onto the        hair and, where necessary, rinsing out, then drying.

The following examples are intended to explain the subject matter of thepresent disclosure without having any limiting effect.

EXAMPLES

TABLE 1 Dye gel for oxidative hair dyeing Test sample Ingredient (wt. %)Monoethanolamine (2-aminoethan-1-ol) 0.40 Ammonium hydroxide 4.63Acrylates/C10-30 Alkyl Acrylate 0.40 Crosspolymer Sodium polyacrylate*(active content) 1.00 Mineral oil 0.70 Trideceth-6 0.10 Sodium laurethsulphate 0.80 L-Serin 0.75 Sodium sulfate 0.30 Tetranatrium EDTA 0.30Ascorbic acid 0.08 Toluen-2,5-diaminsulphate 1.35 Resorcin 0.44 2-Methylresorcin 0.10 m-aminophenol 0.06 4-chlororesorcin 0.062-amino-3-methylphenol 0.05 Water ad 100.00 *Sodium polyacrylate,pregelled in a water-in-mineral oil emulsion with Trideceth-6 as theemulsifierViscosity: 15,000 mPas, measured at 20° C. by employing a Brookfieldrotational viscometer at a rotational frequency of 4 rpm with Spindle 5

TABLE 2 Oxidant-containing developer for the dye creme gel from Table 1Test sample Ingredient (wt. %) Sodium benzoate 0.04 Dipicolinic acid(2,6-dicarboxypyridin) 0.10 Di-sodium pyrophosphate 0.10 Potassiumhydroxide 0.10 1,2-Propanediol 1.00 Etidronic acid 0.15 Paraffin oil0.30 Stearyl trimethyl ammonium chloride 0.30 Cetearyl alcohol 3.40Ceteareth-20 1.00 Hydrogen peroxide 6.00 Water ad 100.00Viscosity: 4.500 mPas, measured at 20° C. with a rotational viscometerHaake VT 550 at a rotational frequency of 4 rpm with measurementgeometry MV II

TABLE 3 Oxidant-containing developer for the dye creme gel from Table 1Test sample Ingredient (wt. %) Sodium hydroxide 0.40 Dipicolinic acid(2,6-dicarboxypyridin) 0.10 Di-sodium pyrophosphate 0.03 Etidronic acid0.15 Mixture of cross-linked (meth)acrylic acid/ 4.20 acrylic acid-C1-C6-alkyl ester copolymers (ex Aculyn 33A) Sodium laureth(2)sulphate0.50 Hydrogen peroxide 6.00 Water ad 100.00* Aculyn 33A: hydrous dispersion of Acrylates Copolymer (mixture ofcross-linked (meth)acrylic acid/acrylic acid —C1-C6-alkyl estercopolymers); 28 wt. % polymer content (active substance)Viscosity: * Viscosity: measured at 20° C. by employing a Brookfieldrotational viscometer at a rotational frequency of 20 rpm with Spindle 2

Production of the Application Mixtures and Coloration on Hair

Dye gel and developer according to Table 4 were mixed with one anotherin a homogeneous manner. The application mixtures thus obtained wereapplied, immediately after production, to human hair (natural whitehair, Kerling) (liquor ratio 4 gram application mixture per gram of hairand left on the hair for 30 minutes at room temperature (22° C.). Thestrands were then rinsed out and towel-dried.

TABLE 4 Production of the application mixtures for coloration on hairViscosity of the Weight application Dye gel (M1) (agent as ratio mixturecontemplated herein) Developer (M2) (M1):(M2) [mPas]* according to Table1 according to Table 2 1:2 56,000 according to Table 1 according toTable 2 1:1 47,000 according to Table 1 according to Table 3 1:2 23,000according to Table 1 according to Table 3 1:1 22,000 *Viscosity:measured at 20° C. by employing a Brookfield rotational viscometer at arotational frequency of 4 rpm with Spindle 5.

While at least one exemplary embodiment has been presented in theforegoing detailed description, it should be appreciated that a vastnumber of variations exist. It should also be appreciated that theexemplary embodiment or exemplary embodiments are only examples, and arenot intended to limit the scope, applicability, or configuration of thevarious embodiments in any way. Rather, the foregoing detaileddescription will provide those skilled in the art with a convenient roadmap for implementing an exemplary embodiment as contemplated herein. Itbeing understood that various changes may be made in the function andarrangement of elements described in an exemplary embodiment withoutdeparting from the scope of the various embodiments as set forth in theappended claims.

1. Agent for oxidative hair dyeing comprising, relative to the weight ofthe agent in each case, from about 70 to about 95 wt. % water, at leastone oxidation dye precursor, at least one alkalizing agent, at least onetenside, selected from anionic, zwitterionic and amphoteric tensides, aswell as mixtures thereof, in a total quantity of from about 0.1-about 2wt. %, Sodium polyacrylate in a total quantity of from about 0.1-about1.5 wt. %, at least one linear, saturated alkanol with two or threehydroxy groups and from about 2 to about 8 carbon atoms in the alkylgroup in a total quantity of from 0-about 3 wt. %, wherein no saturatedor unsaturated non-alkoxylated alkanols with a hydroxy group and fromabout 1 to about 50 carbon atoms in the alk(en)yl group and no saturatedor unsaturated alkanecarboxylic acids with from about 1 to about 50carbon atoms, and no oxidants are included in the agent.
 2. Agentaccording to claim 1, wherein the alkalizing agent is selected from thegroup comprising ammonium hydroxide, basic amino acids,alkalihydroxides, alkanolamines, alkali metal metasilicates, alkaliphosphates and alkali hydrogen phosphates, as well as the mixturesthereof.
 3. Agent according to claim 1, wherein the at least one anionicor zwitterionic tenside is present and is selected from C₈-C₂₀ alkylsulphates, C₈-C₂₀-alkyl ether sulfphates and C₈-C₂₀ ether carboxylicacids, each with from about 8 to about 20 C-atoms in the alkyl group andfrom 0 to about 12 ethylene oxide groups in the molecule,coco-acylaminopropyl-dimethyl ammonium glycinate, as well as frommixtures of said tensides.
 4. Agent according to one of claim 1, whereinthe sodium polyacrylate is pregelled in a water-in-oil emulsion, whereinsaid water-in-oil emulsion comprises, relative to the weight thereof ineach case, from about 40-about 60 wt. % sodium polyacrylate, from about25-about 45 wt. % oil(s) in total, from about 0.5-about 4.9 wt. %tenside(s) in total, and from about 0.5-about 4.9 wt. % water.
 5. Agentaccording to claim 1, having a viscosity in the range of from about10,000-about 75,000 mPas, measured at 20° C. by employing a Brookfieldrotational viscometer at a rotational frequency of 4 rpm with Spindle 5.6. Agent according to claim 1, having a pH value in the range of fromabout 8-about 12, measured at 20° C.
 7. Agent according to claim 1,further comprising at least one cross-linked copolymer chosen fromacrylic acid and non-ethoxylated esters of acrylic acid with linearC10-C30 mono-alcohols.
 8. Kit-of-parts comprising—packaged separatelyfrom one another— a) at least one container (C1), comprising an agentfor oxidative hair dyeing according to claim 1, and b) at least onecontainer (C2), comprising an oxidant preparation (M2), which comprisesfrom about 40-about 96 wt. % of water, also hydrogen peroxide in a totalquantity of from about 0.5 to about 23 wt. %, and which has a pH valuein the range from about 2.0 to about 6.5, measured at 20° C., whereineach of the wt. % values are relative to the weight of the oxidantpreparation (M2).
 9. Kit-of-parts according to claim 8, wherein theoxidant preparation (M2) comprises at least one cation tenside. 10.Kit-of-parts according to claim 9, wherein the oxidant preparation (M2)comprises no polymer with a polymerization degree of at least about 200and no polymer with a molecular weight of about 10000 Dalton or higher.11. Kit-of-parts according to claim 8, wherein the oxidant preparation(M2) comprises at least one copolymer, selected from cross-linkedacrylic acid/acrylic acid —C1-C6 alkyl ester-copolymers and cross-linkedmethacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers.
 12. Methodfor oxidative hair dyeing, comprising the following method steps: i)Providing a cosmetic agent for oxidative hair dyeing according to claim1, ii) Providing an oxidant preparation (M2), which comprises from about40-about 96 wt. %, hydrogen peroxide in a total quantity of from about0.5 to about 23 wt. %, and which has a pH value in the range from about2.0 to about 6.5, measured at 20° C., wherein each of the wt. % valuesare relative to the weight of the oxidant preparation (M2), whereinoptionally, either at least one cation tenside or at least onecopolymer, selected from cross-linked acrylic acid/acrylicacid-C1-C6-alkyl ester-copolymers and cross-linked methacrylicacid/acrylic acid-C1-C6-alkyl ester-copolymers is included, iii) Mixingthe cosmetic agent (M1) with the oxidant preparation (M2), immediatelyafterwards, iv) Applying the mixture obtained in Step iii) onto the hairand leaving said mixture for a period of from about 1 to about 60minutes, at room temperature and/or at from about 30-about 60° C. on thehair, v) Rinsing the hair with water and/or a cleansing composition, andvi) optionally, applying a post-treatment agent onto the hair and,optionally, rinsing out, then drying.
 13. Method for oxidative hairdyeing according to claim 12, wherein the oxidant preparation (M2)comprises at least one cation tenside, and comprises no polymer with apolymerization degree of at least about 200 and no polymer with amolecular weight of about 10000 Dalton or higher.
 14. Method foroxidative hair dyeing according to claim 12, wherein the oxidantpreparation (M2) comprises at least one copolymer, selected fromcross-linked acrylic acid/acrylic acid —C1-C6 alkyl ester-copolymers andcross-linked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers.15. Method for oxidative hair dyeing according to claim 12, wherein theoxidant preparation (M2) comprises at least one tenside, selected fromanion tensides and non-ionic tensides, as well as mixtures thereof, in atotal quantity of from about 0.05-about 2 wt. %, and at least onelinear, saturated 1-alkanol with from about 14 to about 22 carbon atoms,selected from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetylalcohol), 1-octadecanol (stearyl alcohol) and 1-eicosanol (arachylalcohol), as well as mixtures thereof, in a total quantity of from about1-about 5 wt. %, wherein optionally, at least one oil is included in atotal quantity of from about 0.2-about 50 wt. %, and/or optionally atleast one cation tenside, wherein all quantity values are relative tothe weight of the oxidant preparation (M2).
 16. Agent according to claim1, wherein the sodium polyacrylate is present in a total quantity offrom about 0.8-about 11 wt. %, with an average molecular weight Mw inthe range from about 1,000,000 to about 20,000,000 Dalton.
 17. Agentaccording to claim 3, wherein the at least one anionic or zwitterionictenside is present and includes sodium laureth(2)sulphate.
 18. Agentaccording to claim 3, wherein the at least one anion or zwitteriontenside is included in a total quantity of from about 0.3-about 1.5 wt.%, relative to the weight of the agent.
 19. Agent according to claim 7,wherein the at least one cross-linked copolymer is present in a totalquantity of from about 0.05-about 2 wt. %, relative to the weight of theagent.
 20. Agent according to claim 1, wherein: the at least one anionicor zwitterionic tenside is selected from C₈-C₂₀ alkyl sulphates,C₈-C₂₀-alkyl ether sulfphates and C₈-C₂₀ ether carboxylic acids, eachwith from about 8 to about 20 C-atoms in the alkyl group and from 0 toabout 12 ethylene oxide groups in the molecule, the at least one anionor zwitterion tenside is included in a total quantity of from about0.3-about 1.5 wt. %, relative to the weight of the agent, and the agentfurther comprises at least one cross-linked copolymer chosen fromacrylic acid and non-ethoxylated esters of acrylic acid with linearC10-C30 mono-alcohols present in a total quantity of from about0.05-about 2 wt. %, relative to the weight of the agent.